/* roulang page: index */
:root {
    --bg-deep: #071528;
    --bg-mid: #0B1D40;
    --glass-bg: rgba(11, 27, 52, 0.72);
    --glass-bg-2: rgba(9, 24, 47, 0.66);
    --primary: #1B6DFF;
    --primary-deep: #0F5FE0;
    --accent: #22E5D8;
    --amber: #FFB347;
    --text-main: #F0F5FB;
    --text-sub: #9FB0C4;
    --text-weak: #5D7089;
    --border-light: rgba(255, 255, 255, 0.12);
    --border-accent: rgba(34, 229, 216, 0.45);
    --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.38);
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --font-main: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --container-max: 1200px;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-main);
    background: var(--bg-deep);
    background-image: linear-gradient(180deg, #071528 0%, #0B1D40 60%, #071528 100%);
    background-attachment: fixed;
    color: var(--text-main);
    line-height: 1.8;
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: -120px;
    right: -120px;
    width: 480px;
    height: 480px;
    background: rgba(27, 109, 255, 0.18);
    border-radius: 50%;
    filter: blur(120px);
    z-index: 0;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    bottom: -80px;
    left: -80px;
    width: 420px;
    height: 420px;
    background: rgba(34, 229, 216, 0.10);
    border-radius: 50%;
    filter: blur(120px);
    z-index: 0;
    pointer-events: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
    position: relative;
    z-index: 1;
}

/* ===== 导航 ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 999;
    height: 72px;
    background: rgba(7, 21, 40, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
}

.header-nav {
    max-width: var(--container-max);
    height: 72px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.nav-group {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
    flex: 1;
}

.nav-left {
    justify-content: flex-start;
}

.nav-right {
    justify-content: flex-end;
}

.nav-group li {
    margin: 0;
}

.nav-group a {
    display: inline-block;
    padding: 8px 16px;
    color: var(--text-sub);
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 8px;
    position: relative;
    transition: var(--transition);
    white-space: nowrap;
}

.nav-group a::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.nav-group a:hover,
.nav-group a.active {
    color: var(--accent);
}

.nav-group a:hover::after,
.nav-group a.active::after {
    width: 24px;
}

.logo-center {
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 0;
    bottom: 0;
}

.logo-center a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.28rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.02em;
    white-space: nowrap;
    transition: var(--transition);
}

.logo-center a:hover {
    color: var(--accent);
}

.logo-dot {
    width: 10px;
    height: 10px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 12px var(--accent), 0 0 24px rgba(34, 229, 216, 0.4);
    flex-shrink: 0;
    animation: pulse-dot 2.8s infinite;
}

@keyframes pulse-dot {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.25); opacity: 0.75; }
}

.menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    width: 44px;
    height: 44px;
    font-size: 1.2rem;
    color: var(--text-main);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.menu-toggle:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    z-index: 998;
    background: rgba(7, 21, 40, 0.96);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-light);
    padding: 16px 24px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.mobile-menu.open {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 14px 8px;
    font-size: 1rem;
    color: var(--text-sub);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    transition: var(--transition);
}

.mobile-menu a:last-child {
    border-bottom: none;
}

.mobile-menu a:hover,
.mobile-menu a.active {
    color: var(--accent);
    padding-left: 16px;
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 30px;
    border-radius: 999px;
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-align: center;
    font-family: var(--font-main);
}

.btn-primary {
    background: linear-gradient(135deg, #1B6DFF, #0F5FE0);
    color: #fff;
    box-shadow: 0 0 18px rgba(27, 109, 255, 0.45);
}

.btn-primary:hover {
    box-shadow: 0 0 28px rgba(27, 109, 255, 0.65), 0 0 40px rgba(34, 229, 216, 0.35);
    transform: translateY(-2px);
}

.btn-primary:active {
    transform: translateY(1px) scale(0.98);
    box-shadow: 0 0 10px rgba(27, 109, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 16px rgba(34, 229, 216, 0.2);
}

.btn-amber {
    background: linear-gradient(135deg, #FFB347, #FF9A3E);
    color: #071528;
    box-shadow: 0 0 18px rgba(255, 179, 71, 0.4);
}

.btn-amber:hover {
    box-shadow: 0 0 28px rgba(255, 179, 71, 0.6);
    transform: translateY(-2px);
}

/* ===== Hero ===== */
.hero {
    position: relative;
    padding-top: 160px;
    padding-bottom: 120px;
    min-height: 80vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    opacity: 0.12;
    z-index: 0;
}

.hero .container {
    display: flex;
    align-items: center;
    gap: 60px;
}

.hero-content {
    flex: 1.1;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(34, 229, 216, 0.12);
    border: 1px solid rgba(34, 229, 216, 0.25);
    color: var(--accent);
    border-radius: 999px;
    padding: 6px 18px;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    margin-bottom: 28px;
}

.hero-badge i {
    font-size: 0.75rem;
}

.hero h1 {
    font-size: clamp(1.9rem, 4.2vw, 3.4rem);
    font-weight: 800;
    line-height: 1.2;
    margin: 0 0 20px 0;
    letter-spacing: -0.01em;
    max-width: 620px;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, var(--accent), #1B6DFF);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text-sub);
    line-height: 1.8;
    max-width: 520px;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 56px;
}

.hero-stats {
    display: flex;
    gap: 36px;
    flex-wrap: wrap;
}

.hero-visual {
    flex: 0.9;
    position: relative;
    z-index: 2;
}

.hero-visual .visual-frame {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-light);
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.5);
    position: relative;
    background: var(--glass-bg);
    padding: 12px;
    backdrop-filter: blur(12px);
}

.hero-visual .visual-frame img {
    border-radius: var(--radius-md);
    width: 100%;
    min-height: 360px;
    object-fit: cover;
}

.visual-glow {
    position: absolute;
    bottom: -40px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 80px;
    background: radial-gradient(ellipse, rgba(34, 229, 216, 0.35), transparent 70%);
    filter: blur(30px);
    z-index: -1;
}

.stat-item {
    text-align: center;
}

.stat-item .num {
    display: block;
    font-size: 1.9rem;
    font-weight: 800;
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
    margin-bottom: 2px;
}

.stat-item .label {
    font-size: 0.82rem;
    color: var(--text-weak);
    letter-spacing: 0.04em;
}

/* ===== 区块通用 ===== */
.section {
    position: relative;
    padding: 96px 0;
    z-index: 1;
}

.section-head {
    margin-bottom: 56px;
    max-width: 700px;
}

.section-head.center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-head .tag {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 12px;
}

.section-head h2 {
    font-size: clamp(1.4rem, 2.4vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 16px 0;
}

.section-head p {
    font-size: 1rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin: 0;
}

/* ===== 优惠阶梯 ===== */
.tiers-section {
    background: linear-gradient(180deg, rgba(27, 109, 255, 0.04), transparent),
        url('/assets/images/backpic/back-2.png') no-repeat center/cover;
    background-attachment: fixed;
    position: relative;
}

.tiers-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(7, 21, 40, 0.88);
    z-index: 0;
}

.tiers-grid {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: 28px;
    padding: 20px 0;
}

.tier-card {
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 32px 36px;
    max-width: 680px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.tier-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 3px;
    height: 100%;
    background: linear-gradient(180deg, var(--accent), transparent);
    opacity: 0.6;
}

.tier-card:nth-child(2) {
    margin-left: 40px;
    transform: translateY(-10px);
}

.tier-card:nth-child(3) {
    margin-left: 80px;
    transform: translateY(-20px);
}

.tier-card:nth-child(3)::before {
    background: linear-gradient(180deg, var(--amber), transparent);
}

.tier-card:hover {
    border-color: var(--border-accent);
    box-shadow: 0 0 0 1px rgba(27, 109, 255, 0.18), var(--shadow-card);
    transform: translateY(-14px);
}

.tier-step {
    display: inline-block;
    font-size: 0.82rem;
    font-weight: 800;
    color: var(--accent);
    background: rgba(34, 229, 216, 0.12);
    padding: 4px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    letter-spacing: 0.1em;
}

.tier-card:nth-child(3) .tier-step {
    color: var(--amber);
    background: rgba(255, 179, 71, 0.12);
}

.tier-card h3 {
    font-size: 1.18rem;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--text-main);
}

.tier-card .desc {
    font-size: 0.92rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin-bottom: 18px;
}

.tier-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tier-list li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--text-sub);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 5px 12px;
    border-radius: 999px;
}

.tier-list li i {
    color: var(--accent);
    font-size: 0.75rem;
}

/* ===== 套餐对比 ===== */
.compare-section {
    position: relative;
}

.compare-table-wrap {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
    backdrop-filter: blur(18px);
    border: 1px solid var(--border-light);
    padding: 8px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.compare-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

.compare-table th,
.compare-table td {
    text-align: left;
    padding: 18px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    font-size: 0.95rem;
    line-height: 1.7;
}

.compare-table th {
    font-weight: 600;
    color: var(--text-sub);
    font-size: 0.88rem;
    letter-spacing: 0.02em;
    background: rgba(255, 255, 255, 0.02);
}

.compare-table td {
    color: var(--text-main);
}

.compare-table tr:last-child th,
.compare-table tr:last-child td {
    border-bottom: none;
}

.compare-table .recommend-col {
    background: rgba(34, 229, 216, 0.07);
    border-left: 1px solid rgba(34, 229, 216, 0.15);
    border-right: 1px solid rgba(34, 229, 216, 0.15);
    position: relative;
}

.compare-table .recommend-col th {
    background: rgba(34, 229, 216, 0.07);
}

.compare-table .feature-label {
    color: var(--text-sub);
    font-weight: 500;
}

.recommend-badge {
    display: inline-block;
    background: rgba(34, 229, 216, 0.15);
    color: var(--accent);
    font-size: 0.72rem;
    font-weight: 700;
    padding: 3px 12px;
    border-radius: 6px;
    margin-left: 10px;
    vertical-align: middle;
    letter-spacing: 0.06em;
}

.compare-footer {
    margin-top: 32px;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ===== 限时入口 ===== */
.limited-section {
    padding: 40px 0 96px;
}

.limited-card {
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.72), rgba(7, 19, 38, 0.82));
    backdrop-filter: blur(18px);
    border: 1px solid rgba(255, 179, 71, 0.35);
    border-radius: calc(var(--radius-lg) + 8px);
    padding: 56px 48px;
    text-align: center;
    position: relative;
    box-shadow: 0 0 50px rgba(255, 179, 71, 0.10), 0 24px 60px rgba(0, 0, 0, 0.4);
    max-width: 840px;
    margin: 0 auto;
    overflow: hidden;
}

.limited-card::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 220px;
    height: 220px;
    background: radial-gradient(circle, rgba(255, 179, 71, 0.18), transparent 70%);
    pointer-events: none;
}

.limited-card .badge-amber {
    display: inline-block;
    background: rgba(255, 179, 71, 0.14);
    color: var(--amber);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 6px 18px;
    border-radius: 999px;
    letter-spacing: 0.06em;
    margin-bottom: 24px;
}

.limited-card h2 {
    font-size: clamp(1.4rem, 2.4vw, 2rem);
    font-weight: 700;
    color: var(--text-main);
    margin: 0 0 12px;
}

.limited-card .desc {
    color: var(--text-sub);
    font-size: 1rem;
    margin-bottom: 32px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.countdown {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.countdown-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 179, 71, 0.2);
    border-radius: 14px;
    padding: 18px 22px;
    min-width: 92px;
    text-align: center;
}

.countdown-item .num {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--amber);
    font-variant-numeric: tabular-nums;
    line-height: 1;
    display: block;
    margin-bottom: 6px;
}

.countdown-item .unit {
    font-size: 0.8rem;
    color: var(--text-sub);
    letter-spacing: 0.08em;
}

/* ===== 资讯列表 ===== */
.news-section {
    padding-top: 0;
}

.news-grid {
    display: flex;
    gap: 32px;
    align-items: stretch;
}

.news-featured {
    flex: 0 0 38%;
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.72), rgba(7, 19, 38, 0.78));
    backdrop-filter: blur(18px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 0;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

.news-featured:hover {
    border-color: var(--border-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-card);
}

.news-featured .featured-img {
    width: 100%;
    height: 220px;
    object-fit: cover;
    display: block;
}

.news-featured .featured-body {
    padding: 28px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-featured .badge {
    align-self: flex-start;
    margin-bottom: 14px;
}

.news-featured h3 {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 12px;
    color: var(--text-main);
}

.news-featured p {
    font-size: 0.92rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin: 0 0 20px;
    flex: 1;
}

.news-featured .meta-row {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.82rem;
    color: var(--text-weak);
}

.news-featured .link-more {
    color: var(--accent);
    font-weight: 600;
}

.news-list {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-item {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto auto;
    gap: 6px 24px;
    padding: 20px 24px;
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.55), rgba(7, 19, 38, 0.65));
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    transition: var(--transition);
}

.news-item:hover {
    border-color: var(--border-accent);
    transform: translateX(4px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
}

.news-item .badge {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
}

.news-item h3 {
    grid-column: 1;
    grid-row: 2;
    font-size: 1.02rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-main);
}

.news-item .excerpt {
    grid-column: 1;
    grid-row: 3;
    font-size: 0.88rem;
    color: var(--text-sub);
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-item .meta {
    grid-column: 2;
    grid-row: 1;
    font-size: 0.78rem;
    color: var(--text-weak);
    white-space: nowrap;
    text-align: right;
}

.news-item .go-link {
    grid-column: 2;
    grid-row: 3;
    align-self: end;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
}

.news-empty {
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    color: var(--text-sub);
    font-size: 1rem;
    width: 100%;
}

/* ===== 徽章 ===== */
.badge {
    display: inline-block;
    background: rgba(34, 229, 216, 0.12);
    color: var(--accent);
    font-size: 0.78rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 6px;
    letter-spacing: 0.02em;
    line-height: 1.5;
}

.badge-blue {
    background: rgba(27, 109, 255, 0.15);
    color: #7BA8FF;
}

/* ===== 咨询表单 ===== */
.contact-section {
    background: linear-gradient(180deg, rgba(27, 109, 255, 0.03), transparent);
}

.contact-grid {
    display: flex;
    gap: 48px;
    align-items: flex-start;
}

.contact-info {
    flex: 0 0 42%;
    padding-top: 12px;
}

.contact-info h2 {
    font-size: clamp(1.4rem, 2.4vw, 2rem);
    font-weight: 700;
    line-height: 1.3;
    margin: 0 0 16px;
}

.contact-info .desc {
    color: var(--text-sub);
    font-size: 0.98rem;
    margin-bottom: 32px;
    max-width: 380px;
}

.contact-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 0.95rem;
    color: var(--text-sub);
}

.contact-list i {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: rgba(34, 229, 216, 0.1);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
    border: 1px solid rgba(34, 229, 216, 0.2);
}

.contact-form-card {
    flex: 1;
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
    backdrop-filter: blur(18px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 36px;
    box-shadow: 0 18px 50px rgba(0, 0, 0, 0.3);
}

.form-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-field label {
    font-size: 0.88rem;
    color: var(--text-sub);
    font-weight: 500;
}

.form-field input,
.form-field select,
.form-field textarea {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    padding: 13px 16px;
    font-size: 0.95rem;
    color: var(--text-main);
    font-family: var(--font-main);
    transition: var(--transition);
    width: 100%;
    outline: none;
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(27, 109, 255, 0.15);
    background: rgba(255, 255, 255, 0.06);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
    color: var(--text-weak);
}

.form-field select option {
    background: var(--bg-deep);
    color: var(--text-main);
}

.form-field textarea {
    min-height: 120px;
    resize: vertical;
}

.form-error {
    font-size: 0.78rem;
    color: #FF6B6B;
    margin-top: 4px;
    display: none;
}

.form-field.error input,
.form-field.error select,
.form-field.error textarea {
    border-color: #FF6B6B;
}

.form-field.error .form-error {
    display: block;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 760px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.faq-item {
    background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
    backdrop-filter: blur(14px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: 20px 26px;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(34, 229, 216, 0.25);
}

.faq-item.active {
    border-color: var(--border-accent);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-main);
    gap: 16px;
}

.faq-question .icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: rgba(34, 229, 216, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 0.85rem;
    transition: var(--transition);
}

.faq-item.active .faq-question .icon {
    transform: rotate(45deg);
    background: rgba(255, 179, 71, 0.15);
    color: var(--amber);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding-top: 0;
    color: var(--text-sub);
    font-size: 0.92rem;
    line-height: 1.7;
    transition: all 0.35s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
    padding-top: 14px;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    margin-top: 14px;
}

/* ===== CTA ===== */
.cta-section {
    padding: 40px 0 96px;
}

.cta-block {
    background: linear-gradient(145deg, rgba(27, 109, 255, 0.15), rgba(7, 19, 38, 0.7));
    border: 1px solid rgba(27, 109, 255, 0.3);
    border-radius: calc(var(--radius-lg) + 6px);
    padding: 56px 48px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-block::before {
    content: '';
    position: absolute;
    top: -60px;
    left: -60px;
    width: 180px;
    height: 180px;
    background: radial-gradient(circle, rgba(34, 229, 216, 0.18), transparent 70%);
}

.cta-block h2 {
    font-size: clamp(1.4rem, 2.4vw, 2rem);
    font-weight: 700;
    margin: 0 0 12px;
}

.cta-block p {
    color: var(--text-sub);
    margin: 0 0 28px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== 页脚 ===== */
.site-footer {
    background: #04101F;
    border-top: 1px solid var(--border-light);
    padding: 64px 0 32px;
    position: relative;
    z-index: 1;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 48px;
    margin-bottom: 48px;
}

.footer-brand .logo-center {
    position: static;
    transform: none;
    justify-content: flex-start;
    margin-bottom: 16px;
    display: flex;
}

.footer-brand .logo-center a {
    font-size: 1.1rem;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--text-sub);
    line-height: 1.7;
    margin: 0;
    max-width: 280px;
}

.footer-col h4 {
    font-size: 0.98rem;
    font-weight: 600;
    color: var(--text-main);
    margin: 0 0 18px;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-col ul a {
    color: var(--text-sub);
    font-size: 0.88rem;
    transition: var(--transition);
}

.footer-col ul a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: var(--text-sub);
    font-size: 0.88rem;
    margin-bottom: 12px;
}

.footer-contact i {
    color: var(--accent);
    margin-top: 4px;
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding-top: 24px;
    text-align: center;
    font-size: 0.82rem;
    color: var(--text-weak);
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
    .hero .container {
        flex-direction: column;
        gap: 48px;
    }

    .hero-content {
        text-align: center;
    }

    .hero h1,
    .hero-sub {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .tier-card:nth-child(2),
    .tier-card:nth-child(3) {
        margin-left: 24px;
    }

    .contact-grid {
        flex-direction: column;
        gap: 40px;
    }

    .contact-info {
        flex: 1 1 auto;
        text-align: center;
    }

    .contact-info .desc {
        margin-left: auto;
        margin-right: auto;
    }

    .contact-list li {
        justify-content: center;
    }

    .form-actions {
        justify-content: center;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 72px 0;
    }

    .container {
        padding-left: 16px;
        padding-right: 16px;
    }

    .desktop-nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .header-nav {
        padding: 0 16px;
    }

    .logo-center {
        position: static;
        transform: none;
    }

    .tier-card,
    .tier-card:nth-child(2),
    .tier-card:nth-child(3) {
        margin-left: 0;
        transform: none;
        max-width: 100%;
    }

    .tier-card:hover {
        transform: translateY(-4px);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .news-grid {
        flex-direction: column;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

    .limited-card {
        padding: 40px 24px;
    }

    .countdown-item {
        min-width: 72px;
        padding: 14px 12px;
    }

    .countdown-item .num {
        font-size: 1.7rem;
    }

    .hero {
        padding-top: 130px;
        padding-bottom: 80px;
    }
}

@media (max-width: 520px) {
    .section {
        padding: 56px 0;
    }

    .section-head {
        margin-bottom: 36px;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-item .num {
        font-size: 1.5rem;
    }

    .compare-table-wrap {
        padding: 4px;
    }

    .compare-table th,
    .compare-table td {
        padding: 14px 16px;
        font-size: 0.88rem;
    }

    .limited-card {
        padding: 32px 18px;
    }

    .countdown {
        gap: 10px;
    }

    .countdown-item {
        min-width: 60px;
        padding: 12px 8px;
    }

    .countdown-item .num {
        font-size: 1.4rem;
    }

    .countdown-item .unit {
        font-size: 0.7rem;
    }

    .form-actions .btn {
        width: 100%;
    }

    .cta-block {
        padding: 36px 24px;
    }

    .cta-block .btn {
        width: 100%;
    }

    .news-item {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
        gap: 8px;
        padding: 18px;
    }

    .news-item .excerpt {
        -webkit-line-clamp: 2;
    }

    .news-item .meta {
        grid-column: 1;
        grid-row: 1;
        text-align: left;
    }

    .news-item .go-link {
        grid-column: 1;
        grid-row: 4;
        justify-self: start;
    }

    .news-item h3 {
        grid-row: 2;
    }

    .news-item .excerpt {
        grid-row: 3;
    }

    .news-featured .featured-body {
        padding: 20px;
    }

    .contact-form-card {
        padding: 24px 20px;
    }
}

@media (max-width: 640px) {
    .grid-x>.cell {
        padding-left: 0;
        padding-right: 0;
    }
}

/* roulang page: article */
:root {
            --bg-deep: #071528;
            --bg-mid: #0B1D40;
            --bg-panel: rgba(11, 27, 52, 0.72);
            --bg-card: rgba(9, 24, 47, 0.66);
            --bg-card-solid: rgba(9, 24, 47, 0.88);
            --primary: #1B6DFF;
            --primary-dark: #0F5FE0;
            --accent: #22E5D8;
            --amber: #FFB347;
            --text-main: #F0F5FB;
            --text-sub: #9FB0C4;
            --text-muted: #5D7089;
            --border-light: rgba(255, 255, 255, 0.12);
            --border-accent: rgba(34, 229, 216, 0.45);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --glow-blue: 0 0 18px rgba(27, 109, 255, 0.45);
            --glow-cyan: 0 0 28px rgba(34, 229, 216, 0.35);
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.38);
            --transition: 0.3s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-deep);
            background-image: radial-gradient(1100px 400px at 10% -10%, rgba(27, 109, 255, 0.14), transparent 60%),
                radial-gradient(800px 360px at 90% 0%, rgba(34, 229, 216, 0.08), transparent 55%),
                linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-mid) 100%);
            background-attachment: fixed;
            color: var(--text-main);
            line-height: 1.8;
            font-size: 0.95rem;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: var(--accent);
        }

        button {
            font-family: inherit;
            border: none;
            background: none;
            cursor: pointer;
        }

        input,
        select,
        textarea {
            font-family: inherit;
            font-size: 1rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .glass-panel {
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.72), rgba(9, 24, 47, 0.86));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .glass-panel:hover {
            border-color: var(--border-accent);
            box-shadow: 0 0 0 1px rgba(27, 109, 255, 0.18), var(--shadow-card);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.6rem;
            border-radius: 999px;
            padding: 14px 30px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition);
            text-decoration: none;
            border: none;
            cursor: pointer;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: var(--glow-blue);
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(27, 109, 255, 0.65), var(--glow-cyan);
            transform: translateY(-1px);
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 10px rgba(27, 109, 255, 0.3);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: 0 0 12px rgba(34, 229, 216, 0.12);
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: 72px;
            background: rgba(7, 21, 40, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-light);
        }

        .header-nav {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .nav-group {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
            padding: 0;
        }

        .nav-left {
            position: absolute;
            left: 24px;
            top: 50%;
            transform: translateY(-50%);
        }

        .nav-right {
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
        }

        .nav-group li a {
            display: inline-block;
            padding: 8px 16px;
            color: var(--text-sub);
            font-size: 0.88rem;
            font-weight: 500;
            border-radius: 999px;
            position: relative;
            transition: color var(--transition);
        }

        .nav-group li a:hover {
            color: var(--accent);
            background: rgba(34, 229, 216, 0.06);
        }

        .nav-group li a.active {
            color: var(--accent);
        }

        .nav-group li a.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 22px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }

        .logo-center {
            display: flex;
            align-items: center;
        }

        .logo-center a {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: var(--text-main);
            font-weight: 700;
            font-size: 1.2rem;
            letter-spacing: 0.02em;
        }

        .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 12px rgba(27, 109, 255, 0.8);
            position: relative;
        }

        .logo-dot::after {
            content: "";
            position: absolute;
            inset: -5px;
            border-radius: 50%;
            border: 1px solid rgba(34, 229, 216, 0.5);
            animation: pulseDot 2s ease-in-out infinite;
        }

        @keyframes pulseDot {
            0%,
            100% {
                transform: scale(0.9);
                opacity: 0.6;
            }
            50% {
                transform: scale(1.3);
                opacity: 0.15;
            }
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-main);
            font-size: 1.2rem;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }

        .menu-toggle:hover {
            background: rgba(255, 255, 255, 0.06);
        }

        /* ===== 面包屑 ===== */
        .article-breadcrumb {
            padding: 100px 0 12px;
            background: rgba(7, 21, 40, 0.25);
        }

        .article-breadcrumb .container {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 4px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .article-breadcrumb a {
            color: var(--text-sub);
            transition: color var(--transition);
        }

        .article-breadcrumb a:hover {
            color: var(--accent);
        }

        .breadcrumb-sep {
            color: var(--text-muted);
            padding: 0 4px;
        }

        .breadcrumb-current {
            color: var(--text-sub);
            max-width: 280px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ===== 文章头部 ===== */
        .article-hero {
            padding: 48px 0 64px;
            position: relative;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 21, 40, 0.55), rgba(7, 21, 40, 0.92)),
                url('/assets/images/backpic/back-2.png') no-repeat center top/cover;
            opacity: 0.55;
            z-index: 0;
        }

        .article-hero .container {
            position: relative;
            z-index: 1;
        }

        .article-title-wrap {
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
            padding: 24px 0 8px;
        }

        .article-title-wrap h1 {
            font-size: clamp(1.7rem, 3.8vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .article-meta {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 0.84rem;
            color: var(--text-sub);
        }

        .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .meta-item i {
            color: var(--accent);
            font-size: 0.78rem;
        }

        /* ===== 正文 ===== */
        .article-main {
            padding: 0 0 40px;
        }

        .article-body-wrap {
            max-width: 860px;
            margin: 0 auto;
        }

        .article-body {
            padding: 44px 52px;
            background: linear-gradient(160deg, rgba(9, 24, 47, 0.82), rgba(9, 24, 47, 0.92));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            font-size: 1rem;
            line-height: 1.8;
            color: var(--text-main);
        }

        .article-body p {
            margin-bottom: 1.5rem;
            text-align: justify;
        }

        .article-body h2 {
            font-size: 1.38rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem;
            padding-left: 0.9rem;
            border-left: 3px solid var(--accent);
            line-height: 1.4;
        }

        .article-body h3 {
            font-size: 1.14rem;
            font-weight: 600;
            margin: 1.8rem 0 0.8rem;
            padding-left: 0.8rem;
            border-left: 3px solid rgba(34, 229, 216, 0.4);
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.6rem 0;
            box-shadow: var(--shadow-card);
        }

        .article-body blockquote {
            border-left: 3px solid var(--accent);
            background: rgba(34, 229, 216, 0.06);
            border-radius: var(--radius-sm);
            padding: 1.2rem 1.5rem;
            margin: 1.8rem 0;
            color: var(--text-sub);
            font-style: normal;
        }

        .article-body ul,
        .article-body ol {
            margin: 1rem 0 1.5rem;
            padding-left: 1.5rem;
        }

        .article-body li {
            margin-bottom: 0.55rem;
        }

        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: var(--primary);
        }

        .article-empty {
            text-align: center;
            padding: 90px 40px;
            background: linear-gradient(160deg, rgba(9, 24, 47, 0.82), rgba(9, 24, 47, 0.92));
            backdrop-filter: blur(18px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
        }

        .article-empty p {
            font-size: 1.2rem;
            color: var(--text-sub);
            margin-bottom: 24px;
        }

        /* ===== 标签与分享 ===== */
        .article-tags-section {
            padding: 8px 0 48px;
        }

        .article-tags-wrap {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 20px;
            padding: 20px 28px;
            background: rgba(9, 24, 47, 0.4);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
        }

        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }

        .article-tag {
            display: inline-block;
            background: rgba(34, 229, 216, 0.12);
            color: var(--accent);
            border-radius: 6px;
            padding: 3px 10px;
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        .article-share {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.84rem;
            color: var(--text-sub);
        }

        .article-share a {
            width: 36px;
            height: 36px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-light);
            color: var(--text-sub);
            font-size: 0.9rem;
            transition: all var(--transition);
        }

        .article-share a:hover {
            background: rgba(34, 229, 216, 0.14);
            border-color: var(--accent);
            color: var(--accent);
        }

        /* ===== 相关阅读 ===== */
        .related-section {
            padding: 56px 0 20px;
            position: relative;
        }

        .related-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 500px;
            max-width: 90%;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(34, 229, 216, 0.35), transparent);
        }

        .related-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 28px;
        }

        .related-header h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
        }

        .related-line {
            flex: 1;
            height: 1px;
            background: var(--border-light);
        }

        .related-card {
            display: block;
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.7), rgba(9, 24, 47, 0.88));
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            padding: 26px 28px;
            margin-bottom: 24px;
            transition: all var(--transition);
            text-decoration: none;
        }

        .related-card:hover {
            border-color: var(--border-accent);
            box-shadow: 0 0 0 1px rgba(27, 109, 255, 0.18), var(--shadow-card);
            transform: translateY(-4px);
        }

        .related-card h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.5;
            transition: color var(--transition);
        }

        .related-card:hover h4 {
            color: var(--accent);
        }

        .related-card p {
            font-size: 0.88rem;
            color: var(--text-sub);
            margin-bottom: 14px;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .related-time {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        .related-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--accent);
            font-weight: 500;
        }

        /* ===== 返回入口 ===== */
        .back-section {
            padding: 20px 0 64px;
        }

        .back-section .container {
            display: flex;
            justify-content: center;
        }

        .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-size: 0.9rem;
            font-weight: 500;
            padding: 10px 24px;
            border-radius: 999px;
            border: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .back-link:hover {
            color: var(--accent);
            border-color: var(--accent);
            box-shadow: 0 0 12px rgba(34, 229, 216, 0.1);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #04101F;
            border-top: 1px solid var(--border-light);
            padding: 56px 0 24px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand .logo-center a {
            font-size: 1.1rem;
        }

        .footer-brand p {
            font-size: 0.84rem;
            color: var(--text-sub);
            line-height: 1.7;
            margin-top: 12px;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: var(--text-sub);
            font-size: 0.84rem;
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-sub);
            font-size: 0.82rem;
        }

        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            font-size: 0.78rem;
            color: var(--text-muted);
        }

        /* ===== 响应式 ===== */
        @media only screen and (min-width: 64.0625em) {
            .related-card {
                margin-bottom: 24px;
            }
        }

        @media only screen and (min-width: 40.0625em) and (max-width: 64.0625em) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .article-body {
                padding: 36px 32px;
            }
            .nav-group li a {
                padding: 8px 10px;
                font-size: 0.82rem;
            }
        }

        @media only screen and (max-width: 40.0625em) {
            .container {
                padding: 0 16px;
            }
            .header-nav {
                padding: 0 16px;
                justify-content: space-between;
            }
            .nav-left,
            .nav-right {
                position: static;
                transform: none;
                display: none;
                flex-direction: column;
                align-items: flex-start;
                background: rgba(7, 21, 40, 0.96);
                backdrop-filter: blur(18px);
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                padding: 16px 20px;
                gap: 4px;
                border-bottom: 1px solid var(--border-light);
                z-index: 999;
            }
            .nav-left.open,
            .nav-right.open {
                display: flex;
            }
            .nav-left {
                border-right: 1px solid var(--border-light);
            }
            .nav-right {
                border-left: 1px solid var(--border-light);
            }
            .nav-group li {
                width: 100%;
            }
            .nav-group li a {
                display: block;
                width: 100%;
                padding: 14px 16px;
                font-size: 0.9rem;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
                border-radius: 8px;
            }
            .menu-toggle {
                display: block;
                position: absolute;
                right: 16px;
                top: 50%;
                transform: translateY(-50%);
                z-index: 10000;
            }
            .logo-center a {
                font-size: 1rem;
            }
            .article-breadcrumb {
                padding-top: 92px;
            }
            .article-hero {
                padding: 32px 0 40px;
            }
            .article-hero::before {
                background: linear-gradient(180deg, rgba(7, 21, 40, 0.5), rgba(7, 21, 40, 0.94)),
                    url('/assets/images/backpic/back-2.png') no-repeat center top/cover;
            }
            .article-title-wrap h1 {
                font-size: 1.5rem;
            }
            .article-meta {
                gap: 12px;
                font-size: 0.78rem;
            }
            .article-body-wrap {
                max-width: 100%;
            }
            .article-body {
                padding: 28px 18px;
                border-radius: 14px;
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.2rem;
            }
            .article-body h3 {
                font-size: 1.05rem;
            }
            .article-tags-wrap {
                padding: 16px 16px;
                flex-direction: column;
                align-items: flex-start;
            }
            .related-card {
                padding: 20px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #071528;
            --bg-deep-2: #0B1D40;
            --glass-bg: rgba(9, 24, 47, 0.66);
            --glass-bg-2: rgba(7, 19, 38, 0.78);
            --primary: #1B6DFF;
            --primary-dark: #0F5FE0;
            --accent: #22E5D8;
            --amber: #FFB347;
            --text-main: #F0F5FB;
            --text-secondary: #9FB0C4;
            --text-muted: #5D7089;
            --border: rgba(255, 255, 255, 0.12);
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.38);
            --glow-primary: 0 0 18px rgba(27, 109, 255, 0.45);
            --glow-accent: 0 0 28px rgba(34, 229, 216, 0.35);
            --font-sans: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --spacer-desktop: 96px;
            --spacer-tablet: 72px;
            --spacer-mobile: 56px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: linear-gradient(180deg, var(--bg-deep) 0%, var(--bg-deep-2) 100%);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 1rem;
            min-height: 100vh;
            overflow-x: hidden;
        }

        body::before,
        body::after {
            content: '';
            position: fixed;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            filter: blur(120px);
            z-index: -1;
            pointer-events: none;
        }

        body::before {
            top: -120px;
            left: -120px;
            background: rgba(27, 109, 255, 0.22);
        }

        body::after {
            bottom: -120px;
            right: -120px;
            background: rgba(34, 229, 216, 0.12);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: #fff;
        }

        ul,
        ol {
            list-style: none;
        }

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 999;
            height: 72px;
            background: rgba(7, 21, 40, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
        }

        .header-nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
            max-width: 1200px;
            height: 100%;
            margin: 0 auto;
            padding: 0 24px;
        }

        .nav-group {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0;
            padding: 0;
            list-style: none;
        }

        .nav-group li {
            margin: 0;
        }

        .nav-group a {
            color: var(--text-secondary);
            font-size: 0.95rem;
            font-weight: 500;
            letter-spacing: 0.02em;
            padding: 6px 2px;
            position: relative;
            transition: color 0.25s ease;
        }

        .nav-group a:hover {
            color: var(--accent);
        }

        .nav-group a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: width 0.3s ease;
        }

        .nav-group a:hover::after,
        .nav-group a.active::after {
            width: 100%;
        }

        .nav-group a.active {
            color: var(--accent);
        }

        .logo-center {
            position: absolute;
            left: 50%;
            top: 50%;
            transform: translate(-50%, -50%);
            z-index: 2;
        }

        .logo-center a {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 1.12rem;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--text-main);
            white-space: nowrap;
        }

        .logo-center a:hover {
            color: var(--text-main);
        }

        .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(34, 229, 216, 0.8);
            flex-shrink: 0;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            border-radius: 8px;
            color: var(--text-main);
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            cursor: pointer;
            transition: border-color 0.2s ease, background 0.2s ease;
        }

        .menu-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(34, 229, 216, 0.06);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: rgba(7, 21, 40, 0.97);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            padding: 16px 24px 24px;
            position: absolute;
            top: 72px;
            left: 0;
            right: 0;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu a {
            color: var(--text-secondary);
            font-size: 1rem;
            font-weight: 500;
            line-height: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 0 8px;
            transition: color 0.2s ease, padding-left 0.2s ease;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent);
            padding-left: 14px;
        }

        /* ===== 按钮 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: 14px 30px;
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            line-height: 1.4;
            text-align: center;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: var(--glow-primary);
        }

        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(27, 109, 255, 0.55), var(--glow-accent);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(27, 109, 255, 0.3);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(34, 229, 216, 0.04);
        }

        .btn-link {
            background: none;
            border: none;
            color: var(--accent);
            padding: 6px 0;
            border-radius: 0;
            font-size: 0.92rem;
            font-weight: 500;
            box-shadow: none;
        }

        .btn-link:hover {
            color: #fff;
            text-decoration: underline;
            text-underline-offset: 6px;
            box-shadow: none;
            transform: none;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 140px 0 64px;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 21, 40, 0.88) 0%, rgba(7, 21, 40, 0.68) 100%);
        }

        .page-hero::after {
            content: '';
            position: absolute;
            width: 420px;
            height: 420px;
            right: -80px;
            top: 50%;
            transform: translateY(-50%);
            background: rgba(27, 109, 255, 0.28);
            filter: blur(100px);
            border-radius: 50%;
        }

        .page-hero .grid-container {
            position: relative;
            z-index: 2;
        }

        .hero-inner {
            max-width: 720px;
            padding: 36px 44px;
            background: linear-gradient(135deg, rgba(9, 24, 47, 0.72), rgba(7, 19, 38, 0.6));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(34, 229, 216, 0.12);
            color: var(--accent);
            border-radius: 6px;
            padding: 5px 14px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            margin-bottom: 18px;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(34, 229, 216, 0.8);
        }

        .hero-inner h1 {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 0.01em;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .hero-inner p {
            font-size: 1rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* ===== 板块通用 ===== */
        section {
            padding: var(--spacer-desktop) 0;
        }

        .section-tag {
            display: inline-block;
            background: rgba(34, 229, 216, 0.12);
            color: var(--accent);
            border-radius: 6px;
            padding: 4px 12px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 14px;
        }

        .section-header {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 52px;
        }

        .section-header h2 {
            font-size: clamp(1.4rem, 2.4vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* ===== 图文并排 ===== */
        .intro-section {
            background: transparent;
        }

        .intro-image {
            border-radius: var(--radius);
            overflow: hidden;
            position: relative;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
        }

        .intro-image img {
            width: 100%;
            min-height: 300px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .intro-image:hover img {
            transform: scale(1.03);
        }

        .intro-content {
            padding-left: 16px;
        }

        .intro-content h2 {
            font-size: clamp(1.5rem, 2.4vw, 2.1rem);
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .intro-content p {
            color: var(--text-secondary);
            font-size: 0.96rem;
            line-height: 1.8;
            margin-bottom: 22px;
        }

        .check-list {
            margin-top: 12px;
        }

        .check-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            font-size: 0.95rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .check-list li:last-child {
            border-bottom: none;
        }

        .check-list i {
            color: var(--accent);
            font-size: 1.05rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        .check-list strong {
            color: var(--text-main);
            font-weight: 600;
            margin-right: 4px;
        }

        /* ===== 流程步骤 ===== */
        .steps-section {
            background: rgba(9, 24, 47, 0.3);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .step-item {
            position: relative;
            padding: 32px 26px;
            background: linear-gradient(135deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .step-item:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 229, 216, 0.45);
            box-shadow: 0 0 0 1px rgba(27, 109, 255, 0.18), var(--shadow-card);
        }

        .step-num {
            display: block;
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1;
            background: linear-gradient(135deg, var(--accent), var(--primary));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .step-item h3 {
            font-size: 1.12rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== 要点清单 ===== */
        .checklist-section .point-list {
            padding: 0;
            margin: 0;
        }

        .point-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 18px 20px;
            margin-bottom: 16px;
            background: rgba(9, 24, 47, 0.45);
            border: 1px solid var(--border);
            border-radius: 12px;
            transition: border-color 0.25s ease, background 0.25s ease;
        }

        .point-list li:hover {
            border-color: rgba(34, 229, 216, 0.3);
            background: rgba(9, 24, 47, 0.7);
        }

        .point-list li>i {
            font-size: 1.25rem;
            color: var(--primary);
            width: 24px;
            text-align: center;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .point-list li>div {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .point-list strong {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .point-list span {
            font-size: 0.86rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== 资讯条目 ===== */
        .news-list-section {
            background: transparent;
        }

        .news-list {
            max-width: 980px;
            margin: 0 auto;
        }

        .news-row {
            display: flex;
            align-items: flex-start;
            gap: 24px;
            padding: 24px 28px;
            margin-bottom: 16px;
            background: rgba(9, 24, 47, 0.5);
            border: 1px solid var(--border);
            border-radius: 14px;
            transition: border-color 0.3s ease, background 0.3s ease;
        }

        .news-row:hover {
            border-color: rgba(34, 229, 216, 0.35);
            background: rgba(9, 24, 47, 0.72);
        }

        .news-badge {
            display: inline-block;
            background: rgba(27, 109, 255, 0.14);
            color: #6FA3FF;
            border-radius: 6px;
            padding: 4px 10px;
            font-size: 0.74rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            white-space: nowrap;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .news-row-body {
            flex: 1;
        }

        .news-row h3 {
            font-size: 1.04rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color 0.2s ease;
        }

        .news-row:hover h3 {
            color: var(--accent);
        }

        .news-row p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }

        .news-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .news-date i {
            font-size: 0.75rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding-top: 20px;
            padding-bottom: var(--spacer-desktop);
        }

        .cta-box {
            position: relative;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
            padding: 56px 48px;
            background: linear-gradient(135deg, rgba(9, 24, 47, 0.72), rgba(7, 19, 38, 0.65));
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            width: 280px;
            height: 280px;
            left: -60px;
            top: -60px;
            background: rgba(27, 109, 255, 0.15);
            filter: blur(90px);
            border-radius: 50%;
        }

        .cta-box::after {
            content: '';
            position: absolute;
            width: 220px;
            height: 220px;
            right: -40px;
            bottom: -40px;
            background: rgba(34, 229, 216, 0.09);
            filter: blur(80px);
            border-radius: 50%;
        }

        .cta-box>* {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: clamp(1.5rem, 2.6vw, 2.2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 0.96rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: rgba(9, 24, 47, 0.3);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(9, 24, 47, 0.55);
            border: 1px solid var(--border);
            border-radius: 14px;
            margin-bottom: 14px;
            overflow: hidden;
            transition: border-color 0.3s ease;
        }

        .faq-item.active {
            border-color: rgba(34, 229, 216, 0.35);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 20px 26px;
            cursor: pointer;
            font-size: 0.98rem;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.25s ease;
        }

        .faq-question:hover {
            color: var(--accent);
        }

        .faq-question i {
            font-size: 0.9rem;
            color: var(--accent);
            transition: transform 0.35s ease;
            flex-shrink: 0;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            padding: 0 26px;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.75;
            border-top: 0px solid rgba(255, 255, 255, 0.08);
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 16px 26px 22px;
            border-top-width: 1px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #04101F;
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.4fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand .logo-center {
            position: static;
            transform: none;
            margin-bottom: 16px;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.75;
            margin-top: 14px;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 20px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            margin: 0;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.25s ease, padding-left 0.25s ease;
        }

        .footer-col a:hover {
            color: var(--accent);
            padding-left: 6px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        .footer-contact i {
            color: var(--accent);
            font-size: 0.85rem;
            width: 18px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 22px 0;
            text-align: center;
            color: var(--text-muted);
            font-size: 0.84rem;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            section {
                padding: var(--spacer-tablet) 0;
            }

            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }

            .cta-section {
                padding-bottom: var(--spacer-tablet);
            }
        }

        @media (max-width: 639px) {
            .grid-container {
                padding-left: 16px;
                padding-right: 16px;
            }

            section {
                padding: var(--spacer-mobile) 0;
            }

            .desktop-nav {
                display: none;
            }

            .menu-toggle {
                display: inline-flex;
            }

            .header-nav {
                padding: 0 16px;
            }

            .logo-center {
                left: 50%;
                transform: translateX(-50%);
            }

            .logo-center a {
                font-size: 0.98rem;
            }

            .page-hero {
                padding: 100px 0 48px;
            }

            .hero-inner {
                padding: 28px 22px;
            }

            .hero-inner h1 {
                font-size: 1.6rem;
                line-height: 1.3;
            }

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .intro-content {
                padding-left: 0;
                margin-top: 28px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
            }

            .step-item {
                padding: 24px 20px;
            }

            .point-list li {
                padding: 14px 16px;
            }

            .news-row {
                flex-direction: column;
                gap: 10px;
                padding: 20px 18px;
            }

            .news-badge {
                align-self: flex-start;
            }

            .cta-box {
                padding: 40px 22px;
            }

            .cta-box .btn {
                width: 100%;
            }

            .faq-question {
                padding: 16px 18px;
            }

            .faq-answer {
                padding: 0 18px;
            }

            .faq-item.active .faq-answer {
                padding: 14px 18px 18px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .footer-bottom {
                padding: 18px 16px;
                font-size: 0.78rem;
            }

            .site-footer {
                padding-top: 48px;
            }

            .cta-section {
                padding-bottom: var(--spacer-mobile);
            }
        }

        @media (min-width: 640px) {
            .mobile-menu {
                display: none !important;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #071528;
            --bg-secondary: #0B1D40;
            --glass-bg: rgba(9, 24, 47, 0.66);
            --glass-bg-2: rgba(7, 19, 38, 0.78);
            --primary: #1B6DFF;
            --primary-dark: #0F5FE0;
            --accent: #22E5D8;
            --amber: #FFB347;
            --text-primary: #F0F5FB;
            --text-secondary: #9FB0C4;
            --text-muted: #5D7089;
            --border: rgba(255, 255, 255, 0.12);
            --radius: 18px;
            --radius-sm: 10px;
            --shadow-card: 0 18px 40px rgba(0, 0, 0, 0.38);
            --shadow-glow: 0 0 18px rgba(27, 109, 255, 0.45);
            --font-main: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-main);
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            background-attachment: fixed;
            color: var(--text-primary);
            font-size: 0.95rem;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            min-height: 100vh;
        }
        body::before,
        body::after {
            content: "";
            position: fixed;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            filter: blur(120px);
            pointer-events: none;
            z-index: 0;
            opacity: 0.35;
        }
        body::before {
            top: -120px;
            left: -100px;
            background: rgba(27, 109, 255, 0.35);
        }
        body::after {
            bottom: -80px;
            right: -60px;
            background: rgba(34, 229, 216, 0.22);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }
        ul {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
            position: relative;
            z-index: 1;
        }

        /* ===== Header ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(7, 21, 40, 0.82);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
        }
        .header-nav {
            max-width: 1200px;
            height: 72px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            position: relative;
        }
        .nav-group {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .nav-group li a {
            display: inline-block;
            padding: 8px 18px;
            font-size: 0.88rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            position: relative;
            transition: color 0.3s ease, background-color 0.3s ease;
        }
        .nav-group li a:hover,
        .nav-group li a.active {
            color: var(--accent);
        }
        .nav-group li a.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .nav-group li a:hover::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 2px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .logo-center {
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 0;
            height: 72px;
            display: flex;
            align-items: center;
            z-index: 2;
        }
        .logo-center a {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.14rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .logo-center a:hover {
            color: var(--accent);
        }
        .logo-dot {
            width: 10px;
            height: 10px;
            background: var(--accent);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(34, 229, 216, 0.8);
            flex-shrink: 0;
        }
        .menu-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: 10px;
            font-size: 1.1rem;
            color: var(--text-primary);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.04);
            transition: border-color 0.3s ease, color 0.3s ease;
        }
        .menu-toggle:hover {
            border-color: var(--accent);
            color: var(--accent);
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 0.92rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            line-height: 1.4;
        }
        .btn i {
            font-size: 0.8rem;
            transition: transform 0.3s ease;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .btn-primary:hover {
            box-shadow: 0 0 28px rgba(27, 109, 255, 0.55), 0 0 10px rgba(34, 229, 216, 0.35);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: 0 0 12px rgba(27, 109, 255, 0.3);
        }
        .btn-primary:hover i {
            transform: translateX(4px);
        }
        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
        }
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 0 16px rgba(34, 229, 216, 0.15);
        }
        .btn-amber {
            background: linear-gradient(135deg, #FFB347, #F59F2F);
            color: #1a1a1a;
            box-shadow: 0 0 18px rgba(255, 179, 71, 0.35);
        }
        .btn-amber:hover {
            box-shadow: 0 0 26px rgba(255, 179, 71, 0.5);
            transform: translateY(-2px);
        }

        /* ===== Category Hero ===== */
        .category-hero {
            position: relative;
            padding: 150px 0 90px;
            background: linear-gradient(180deg, rgba(7, 21, 40, 0.9) 0%, rgba(7, 21, 40, 0.4) 60%, rgba(7, 21, 40, 0.9) 100%), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }
        .category-hero::after {
            content: "";
            position: absolute;
            width: 260px;
            height: 260px;
            background: rgba(34, 229, 216, 0.12);
            filter: blur(100px);
            border-radius: 50%;
            bottom: -60px;
            right: 8%;
            pointer-events: none;
        }
        .category-hero .hero-inner {
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(34, 229, 216, 0.12);
            color: var(--accent);
            font-size: 0.78rem;
            font-weight: 500;
            letter-spacing: 0.04em;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
            border: 1px solid rgba(34, 229, 216, 0.3);
        }
        .hero-badge i {
            font-size: 0.7rem;
        }
        .category-hero h1 {
            font-size: clamp(1.9rem, 4.2vw, 3rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: 0.01em;
        }
        .category-hero h1 .highlight {
            color: var(--accent);
        }
        .category-hero p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            max-width: 620px;
            margin: 0 auto 30px;
        }
        .hero-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ===== Section General ===== */
        .section {
            padding: 90px 0;
            position: relative;
            z-index: 1;
        }
        .section-head {
            text-align: center;
            max-width: 660px;
            margin: 0 auto 50px;
        }
        .section-head .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            text-transform: uppercase;
            background: rgba(34, 229, 216, 0.1);
            padding: 5px 14px;
            border-radius: 6px;
            margin-bottom: 14px;
        }
        .section-head h2 {
            font-size: clamp(1.4rem, 2.4vw, 2rem);
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .section-head p {
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* ===== Visual Compare ===== */
        .visual-compare {
            padding: 80px 0;
        }
        .compare-visual-card {
            background: linear-gradient(145deg, var(--glass-bg), var(--glass-bg-2));
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 40px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            height: 100%;
        }
        .compare-visual-card .content-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(34, 229, 216, 0.1);
            padding: 4px 12px;
            border-radius: 6px;
            margin-bottom: 16px;
        }
        .compare-visual-card h2 {
            font-size: clamp(1.3rem, 2vw, 1.7rem);
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 16px;
        }
        .compare-visual-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.85;
            margin-bottom: 24px;
        }
        .compare-points {
            display: grid;
            gap: 12px;
            margin-bottom: 28px;
        }
        .compare-points li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }
        .compare-points li i {
            color: var(--accent);
            font-size: 0.85rem;
            margin-top: 4px;
            flex-shrink: 0;
        }
        .visual-image-wrap {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            height: 100%;
            min-height: 360px;
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.6), rgba(7, 19, 38, 0.8));
        }
        .visual-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .visual-image-wrap::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(7, 21, 40, 0.2), rgba(7, 21, 40, 0.75));
            z-index: 1;
        }
        .visual-img-caption {
            position: absolute;
            bottom: 18px;
            left: 20px;
            right: 20px;
            z-index: 2;
            color: var(--text-primary);
            font-size: 0.85rem;
            background: rgba(7, 21, 40, 0.6);
            padding: 8px 14px;
            border-radius: 8px;
            backdrop-filter: blur(10px);
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        /* ===== Matrix Cards ===== */
        .matrix-section {
            background: rgba(5, 15, 32, 0.5);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .matrix-card {
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
            position: relative;
            overflow: hidden;
        }
        .matrix-card::after {
            content: "";
            position: absolute;
            width: 120px;
            height: 120px;
            background: var(--primary);
            filter: blur(80px);
            opacity: 0.14;
            top: 20px;
            right: -30px;
            border-radius: 50%;
            pointer-events: none;
        }
        .matrix-card:hover {
            transform: translateY(-4px);
            border-color: rgba(34, 229, 216, 0.45);
            box-shadow: 0 0 0 1px rgba(27, 109, 255, 0.18), 0 18px 40px rgba(0, 0, 0, 0.38);
        }
        .matrix-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            background: rgba(27, 109, 255, 0.15);
            color: var(--accent);
            border: 1px solid rgba(34, 229, 216, 0.2);
            margin-bottom: 18px;
        }
        .matrix-card h3 {
            font-size: 1.08rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .matrix-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ===== Tier Cards ===== */
        .tier-section {
            padding: 90px 0;
        }
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            align-items: start;
        }
        .tier-card {
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 26px;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            position: relative;
            transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
        }
        .tier-card.featured {
            border-color: rgba(34, 229, 216, 0.35);
            box-shadow: 0 0 0 1px rgba(34, 229, 216, 0.1), 0 18px 40px rgba(0, 0, 0, 0.3);
            transform: translateY(-12px);
        }
        .tier-card:hover {
            transform: translateY(-8px);
            border-color: rgba(34, 229, 216, 0.5);
            box-shadow: 0 0 0 1px rgba(27, 109, 255, 0.18), 0 18px 40px rgba(0, 0, 0, 0.38);
        }
        .tier-card.featured:hover {
            transform: translateY(-14px);
        }
        .tier-card .tier-badge {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(34, 229, 216, 0.1);
            padding: 4px 12px;
            border-radius: 6px;
            margin-bottom: 14px;
        }
        .tier-card.featured .tier-badge {
            background: rgba(255, 179, 71, 0.14);
            color: var(--amber);
        }
        .tier-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .tier-card .tier-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 18px;
        }
        .tier-card .tier-list {
            display: grid;
            gap: 10px;
            margin-bottom: 22px;
        }
        .tier-card .tier-list li {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }
        .tier-card .tier-list li i {
            color: var(--accent);
            font-size: 0.75rem;
            margin-top: 5px;
        }
        .tier-card .tier-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--accent);
        }
        .tier-card .tier-link i {
            transition: transform 0.3s ease;
        }
        .tier-card .tier-link:hover i {
            transform: translateX(4px);
        }

        /* ===== Scenario List ===== */
        .scenario-section {
            background: rgba(5, 15, 32, 0.4);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            max-width: 900px;
            margin: 0 auto;
        }
        .scenario-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 22px 20px;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border);
            border-radius: 14px;
            transition: border-color 0.3s ease, background 0.3s ease;
        }
        .scenario-item:hover {
            border-color: rgba(34, 229, 216, 0.35);
            background: rgba(34, 229, 216, 0.04);
        }
        .scenario-item .scenario-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(27, 109, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 0.95rem;
            flex-shrink: 0;
            border: 1px solid rgba(34, 229, 216, 0.15);
        }
        .scenario-item .scenario-text h3 {
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--text-primary);
        }
        .scenario-item .scenario-text p {
            font-size: 0.84rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 90px 0;
        }
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: grid;
            gap: 14px;
        }
        .faq-item {
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.66), rgba(7, 19, 38, 0.78));
            border: 1px solid var(--border);
            border-radius: var(--radius);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            overflow: hidden;
            transition: border-color 0.3s ease;
        }
        .faq-item.open {
            border-color: rgba(34, 229, 216, 0.4);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 26px;
            cursor: pointer;
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-primary);
            transition: color 0.3s ease;
            text-align: left;
            background: transparent;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            flex-shrink: 0;
            transition: transform 0.35s ease, background 0.35s ease;
            color: var(--accent);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(34, 229, 216, 0.12);
            border-color: rgba(34, 229, 216, 0.3);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            padding: 0 26px;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 26px 22px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 70px 0;
            position: relative;
        }
        .cta-card {
            background: linear-gradient(145deg, rgba(9, 24, 47, 0.72), rgba(7, 19, 38, 0.82));
            border: 1px solid rgba(34, 229, 216, 0.25);
            border-radius: 22px;
            padding: 54px 40px;
            text-align: center;
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            box-shadow: 0 0 40px rgba(34, 229, 216, 0.08);
            max-width: 860px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: "";
            position: absolute;
            width: 220px;
            height: 220px;
            background: rgba(27, 109, 255, 0.22);
            filter: blur(90px);
            border-radius: 50%;
            top: -80px;
            left: 10%;
            pointer-events: none;
        }
        .cta-card h2 {
            font-size: clamp(1.3rem, 2.2vw, 1.8rem);
            font-weight: 700;
            margin-bottom: 14px;
            position: relative;
        }
        .cta-card p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            max-width: 520px;
            margin: 0 auto 28px;
            position: relative;
        }
        .cta-card .cta-action {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
            position: relative;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #04101F;
            border-top: 1px solid var(--border);
            padding: 56px 0 24px;
            position: relative;
            z-index: 1;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo-center {
            position: static;
            transform: none;
            height: auto;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 0.84rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .footer-col ul {
            display: grid;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 0.84rem;
            color: var(--text-secondary);
            transition: color 0.3s ease;
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.82rem;
            color: var(--text-secondary);
        }
        .footer-contact li i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 22px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            display: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1023.98px) {
            .desktop-nav {
                display: none !important;
            }
            .menu-toggle {
                display: flex !important;
            }
            .logo-center {
                position: absolute;
                left: 50%;
                transform: translateX(-50%);
            }
            .header-nav {
                flex-wrap: wrap;
            }
            .header-nav.nav-open {
                height: auto;
                flex-direction: column;
                align-items: center;
                padding-top: 10px;
                padding-bottom: 12px;
            }
            .mobile-nav {
                display: flex;
                flex-direction: column;
                width: 100%;
                background: rgba(7, 21, 40, 0.95);
                border-top: 1px solid var(--border);
                margin-top: 10px;
                padding: 10px 0;
            }
            .mobile-nav a {
                padding: 12px 20px;
                font-size: 0.9rem;
                color: var(--text-secondary);
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
                display: flex;
                align-items: center;
                gap: 10px;
            }
            .mobile-nav a:last-child {
                border-bottom: none;
            }
            .mobile-nav a:hover,
            .mobile-nav a.active {
                color: var(--accent);
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
            .tier-card.featured {
                transform: none;
            }
            .tier-card.featured:hover {
                transform: translateY(-8px);
            }
            .scenario-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 639.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .header-nav {
                padding: 0 16px;
            }
            .logo-center a {
                font-size: 1rem;
            }
            .category-hero {
                padding: 120px 0 60px;
            }
            .hero-actions {
                flex-direction: column;
                align-items: center;
            }
            .hero-actions .btn {
                width: 100%;
                max-width: 280px;
            }
            .section {
                padding: 56px 0;
            }
            .compare-visual-card {
                padding: 28px 22px;
            }
            .visual-image-wrap {
                min-height: 240px;
            }
            .matrix-card {
                padding: 22px;
            }
            .tier-card {
                padding: 24px 20px;
            }
            .cta-card {
                padding: 36px 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-col h4 {
                margin-top: 8px;
            }
        }

        /* ===== Foundation overrides ===== */
        .grid-container {
            max-width: 1200px;
        }
        .grid-x {
            margin-left: -8px;
            margin-right: -8px;
        }
        .cell {
            padding-left: 8px;
            padding-right: 8px;
        }

        /* ===== Reveal on scroll ===== */
        .reveal {
            opacity: 0;
            transform: translateY(24px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 {
            transition-delay: 0.1s;
        }
        .reveal-delay-2 {
            transition-delay: 0.2s;
        }
        .reveal-delay-3 {
            transition-delay: 0.3s;
        }